I like that the controller can be splitted for VR, etc. But I can see two issues: it's not a good design that there are 3 separate parts, it could be the same with only 2 "move" controls and a single cut.

Also, the wristband is on the wrong side, so when you handled them you have the action buttons on the left hand. Maybe this could be solved by unifying the buttons and d-pad with the same "ambidextrous" design, but you loose the classic input keys.